NDLI: AC conductivity scaling behavior in grain and grain boundary response regime of fast lithium ionic conductors

Content Provider	Springer Nature Link
Author	Mariappan, C. R.
Copyright Year	2014
Abstract	AC conductivity spectra of Li-analogues NASICON-type Li1.5Al0.5Ge1.5P3O12 (LAGP), Li–Al–Ti–P–O (LATP) glass–ceramics and garnet-type Li7La2Ta2O13 (LLTO) ceramic are analyzed by universal power law and Summerfield scaling approaches. The activation energies and pre-exponential factors of total and grain conductivities are following the Meyer–Neldel (M-N) rule for NASICON-type materials. However, the garnet-type LLTO material deviates from the M-N rule line of NASICON-type materials. The frequency- and temperature-dependent conductivity spectra of LAGP and LLTO are superimposed by Summerfield scaling. The scaled conductivity curves of LATP are not superimposed at the grain boundary response region. The superimposed conductivity curves are observed at cross-over frequencies of grain boundary response region for LATP by incorporating the $$ \exp \left( {{{ - (E_{A}^{t} - E_{A}^{g} )} \mathord{\left/ {\vphantom {{ - (E_{A}^{t} - E_{A}^{g} )} {kT}}} \right. -0pt} {kT}}} \right) $$ factor along with Summerfield scaling factors on the frequency axis, where $$ E_{A}^{t} $$ and $$ E_{A}^{g} $$ are the activation energies of total and grain conductivities, respectively.
Starting Page	847
Ending Page	852
Page Count	6
File Format	PDF
ISSN	09478396
Journal	Applied Physics A
Volume Number	117
Issue Number	2
e-ISSN	14320630
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-05-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Condensed Matter Physics Optical and Electronic Materials Nanotechnology Characterization and Evaluation of Materials Surfaces and Interfaces, Thin Films Operating Procedures, Materials Treatment
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Science

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